Air-control valve



Feb. 24. 1925. y 1,527,661 E. O. ANDERSON AIR CONTROL-VALVE Filed May 15" 1923 INVENTOR Y Air-Control Vagves, of Which the following Patented Feb. 24, y1925.

"IIUNITED STATES ERNEST O. ANDERSON, OF SANl JOSE, CALIFORNIA.

AIR-CONTROL VALVE.

Zo all whom it may concern.'

.Be it known that I, ERNEST O. ANDERSON, af'citizen of the United States, and a resideiitffof San Jose, in the county of Santa Claravv and State of California, have invented certain-new and useful Improvements in isfla specicatio- ,f -Myinvention relates particularl to an airlcontrol valve placed in the air line used to .ll automobile tires.,

yIt is an object of my invention to provide-avalve of the character indicated which will show the pressure of the air in the tire` being filled Without removal fof the hose from the valve stem. 1

Itis a further object to provide a valve that is under control at all times and one which will register the air pressure in the tire at any time during the infiation of tlnJ same.f

Still another object is to provide a valve control which is simple in construction, easy to manufacture, easy to operate and one that highly efficient in its practical application.

Finally it is an object of my invention to provide a device of the character indicated provided With an air leak or exhaust controlled in a novel manner.

In the drawing Figure 1 is a plan view of the device.

Figure 2- is a section on 2 2 of Figure 1.

Figure 3 is a section on 3 3 of Figure 2.

Referring more particularly to the drawing, 1' indicates the body portion of the 4device preferably formed in a single casting to form chambers 2 3 and 4 of the general relative proportions, contours and arrangement as shown. v

Chamber 2 is the gauge chamber fitted With a top 4 havin an opening therein at 6. In 'the bottom o the inner end of chamber 2 is formed a recess 7 to receive boss 8 on support 9, the latter carrying a pressure gauge 10 as shown. At 11 is a small passage in boss 8 communicating with gauge 10 and extending longitudinally through body portion 1 to av recess 12 communicating With chamber 3.

Chamber 3 is provided with a passage 13 to which a hose, not shown is attached for connecting chamber 3 With the tire. Axially valigned. with recess 12 is another passage closed by a plug 1 4 threaded thereinto and provided with a recess 15.- At 16 is a valve Application filed May 15, 1923. Serial No. 639,146.

stem engaging recesses 12 and 15 and provided with a valve 17 adapted to engage seat 18 on recess 12, and a plate 19 spaced a distance from valve 17 and held vagainst movement away from said valve by a pin 20. Inserted between plate 19 and valve 17 is a spring 21, and inserted between plate 19 and body 1 is a spring 22. By means of this construction valve 17 is normally held in an open position as shown, a forward pressure on plate 19 compressing springs 21 and closing the same, and a further pressure moving plate 19 along stem 16 to compress spring 22. Upon release of the pressure spring 21 first forces plate 19 back- Wardly to contact with pin 20 and then spring 22 moves the Whole valve backvvardly into an open position'. The object of this compound movement will be seen as the description proceeds.

. Chamber 4 is fitted with a member 23 provided with an orifice 24 and a threaded portion 25, the latter providing la connection for an air supply pipe not shown. A passage 26 is formed in body 1 connecting chambers 4 and 3 and in axial alignment With orifice 24. At 27 is shown valve stem engaging orifice 24 and passage 26 and carrying a valve 28 normally held in engagement With seat 29 around passage 26 by a spring 30. One portion of stem 27 extends a distance into chamber 3 and is provided with a conduit 31 communicating With the exterior thereof by means, of

vorifices 32 33.

mounted a valve 42 normally seated againstv a valve seat 43 on plug 37b spring 44. Also, mounted on stem 34 Wit in chamber 3 are arms 45 46, the former engaging plate 19 on stem 16, and the latter engaging stem 27. At 47 is shown a conduit formed in stem 34 and communicating at one end with chamber 48 formed by plug 37, valve seat 43 and valve 42 and normally closed olf from' chamber 3, and with the atmosphere through lever 38 as shown. It is apparent, of course, that when stem 34 is ressed inwardly against spring 44 the air pressure in chamber 3 is exhausted through conduit 47, but when the pressure on the stem is released the conduit 47 will be automatically closed again.

The operation of the device is simple. Being connected to an automobile tire, the air' pressure in the tire is immediately registered on gauge 10 since the passages 13 and 11 are in open communication through chamber 3 and valve 28 is seated on valve vseat 29.

If it is desired to increase the air pressure in the tire the lever 38 is depressed, thereby first closing valve 17 against its seat- 18 thereby shutting off communication with gauge 10 and at the same time bringing arm 46 into contact with valve stem 27. A further movement of the lever 38 moves plate 19 along stem 16 and removes'valve 28 from its seat 29. This movement of stem 27 brings chambers 4 and 3 into communication through conduit 31 and air is permitted to flow through chambers 4 and 3 and passage 13 t-othe tire.

At any moment when it is desired to read the air pressure in the tire the lever 38 is released, the vvalve 28 first closing off as plate 19 moves along stem 16 to stop 20, this action being immediately followed by the opening` of valve 17. If the pressure as indicated by the gauge is too great it may be reduced as desired by pressure of the thumb on stem 34, thereby permitting the desired amount of air to escape through conduit 47.

It is to be. understood, of, course, that while I have herein shown and described one specific embodiment of my invention changes inform, construction, and method of operation may be made within the scope of the appended claims.

claim 1. A valve mechanism insertable in an air pipe line, comprising a valve chamber, a pressure gauge connecting therewith,l a normally open valve controlling said communication, a second vvalve chamber communicating with said first valve chamber and with a source of air supply, a normally closed valve controlling said communication, a memberv carrying arms slidably and revolubly mounted. in said valve chamber to 'successively close-one valve and open the other valve when said member is rotated a distance, said member having a conduit there- -1n communicating with the atmosphere and moved into communication with said valve chamber when a`sl1d1ng movement 1s 1mparted to said member.

2. A valve mechanism insertable in an air pipe line, comprlslng a valve chamber, a pressure gauge connectmg therewlth, a normally' open valve controlling said communication, asccond valve chamber communicating Wlth said first valve chamber and w1th a source of fluid supply, a normally closed valve controlling said communication, a

port formed therein, a valve stem revolubly mounted in said chamber and passing through the wall of said casing, means operated by the rotation of said stem for actuating the valve controlling said inlet port, a valve seat formed on the interior of said casing in concentric relation to said stem, a valve mounted on said stem in engagement with said seat, and means for maintaining said valve in engagement with said seat, whereby to prevent leakage from the chamber around said valve stem where it passes through the wall of said casing.

ERNEST O. ANDERSON. 

